Improvement in gage-cocks



UNITED STATES PATENT Errea.

U'ARLEST. WOODMAN, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO HIM- SELF AND OHAS. E. WOODMAN, OF SAME PLAGE.-

INl/FROVEMENT IN GAG EFCOCKS.

Specification formn g part of Letters Patent No. iLQM, dated'Noveinber 2S, 1865.

tion and represented in the accompanying drawings, of which- Figure 1 is a horizontal section, and Fig. 2i

avertical section,'of one construction of a steam cock or faucet, as provided with my invention. Fig. 3 is a horizontal section, and Fig. 4 a vertical section, of another form of such faucet, or mode in which I have contemplated the application of that principle by which my said invention differs from others of like charactor.

In such drawings, A denotes the valvecase of the faucet, it beingfconstructed with a cy, lindrica-l chamber, a, provided with an induction passage, b, and an eduction-passage, c, which in the drawings are shown as arranged at right-angles with respect to each other, although such arrangement is not material to my invention.

B is the valve of the faucet, which in this case is a cylindricalroller arranged with its curved surface against the interior curved surface of the case. The journals d l ol' the roller are indirectly supported by a sh'al't, c, Whose axis is coincident with thatof the case. The shaft is pivoted to the bottom or one end of thecase, and extends through a stuflin g-box, c, disposed at the other end of such case, in manner as shown in Figs. 2 and 4. The journals of the roller, however, are exhibited in the drawings as doubly supported in boxes f f, which slide freely in the'shaft and against springs g g, arranged therein in manner as represented in Figs. 2 and 4.

The roher-valve B of Figs. l and 2 is shown as having itsbody h made of vulcanized indiarubber, or some equivalent elastic material secured to a shaft, t', but the roller-valve B, as represented in the other two figures, may be `supposed to bev made of an entirely inelastic material, such as copper, iron, or wood, for instance, in -which case the bearings of its jour-- nais should be capable of sliding into their supporting shaft, and should rest against springs arranged therein, the whole being substantially as shown in Figs. 3 and/l; and, furthermore, there should be at the inner terminus ot' each ofthe inlet and outlet passages b c a curved valve-seat, 7a or l, formed to fit to the 'curved surface of the valve when in contact lVhen the cylindrical rollenvalve is made of vulcanized indiaiubber, or ot' anyv equivalent elastic material', itis not essential to'have the springs to its journal-bearings, as such bear ings may be fastened to and notslide into the shaft; but as the employment of the springs with the elastic india-rubber is advantageous, I have represented it in Fig. 2 as provided with them and slide-bearings.

lli/'hilo the relier -isfcauscd te-eever either et' vthe passages l) c, there will be no passage ofei- -holding a liquid.

The advantage ofthe roller-valve, inndeand applied as hereinbefore described, is that, generally speaking, it will operate with less fric-I tion than is incident to a slidewal\'e ora conilnon rotaryv valve-plug, and it will preserve itselt' tight against its seat, up to which it will be pressed either by its inherent elasticity or that of its springs.

I claim- The improved cock or faucet, constructed substantially as describedviz., with aroller valve made and applied to a shaft, ase plained, and arranged so as to operate with the curvedinner surface of the case, and with inlet and outlet passages leading therefrom in lmanner substantially as hereinbefore set forth.

C. T. VOODMAN. Witnesses:

' R. H. EDDY,

F. P. HALE, Jr. 

